Wood-heel-turning machine



Oct. 18, 1927.

D. O. MARSHALL WOOD HEEL TURNING MACHINE Filed March 27. 1925 llllll l/vvavrofi: ao. MARSHALL. WM

' Arrow/5x5 Patented Oct. 18, 1927.

g IVUNITED STATES DAvIno. MARSHALL, on ST. Lou'Is,M1issoURI, AssIGNoR T0 MOUND CITY woon nan & MFG.'C O., 0F srjnouis', ISsOURLACORPORATiON OF MISSOURI.

ATENTQFFi E'.)

-woon-nnEL-r nNIne MAoHINnf npplicatiennled march 27,1925. s i-a1 -No 18,821.

V The main object of the, invention, is to provide a heel blank turning machine of the general type referred to thatisequipped with a device for holding the heel blank supporting means, against accidental movement when said means is arranged in its loading and unloading position, constructed so as to not be rendered ineffective, simply by pressure exerted on said heel blank supporting means in-a direction tending to move it towards the cutter of the machine, thereby eliminating the possibility of the operators hand or fingers being injured by the cutter in the operation of applying or removing a heel-blank, without, however, complicating the operation of the machine and requiring the operator to-make an additional movement preparatory to moving the heelblank supporting means towards the cutter. 1 Another object is to provide a heel blank turning machine of the kind described in which the means that is used/to hold the heel blank supporting means against accidental movement can be .adjusted easily to compensat-efor variations in; the position of another part of the machine that is capable of being adjusted to change the contour of the side faces and back of the heel produced in the machine. Other objects; and desirable features of myvinvention will behereinafter pointed out. vi c I have herein illustrated my invention embodied in a'iwood heel turning machine of the kind that comprises a pairof rotatable cutters arranged in parallel relation andvspaced apart, and a heel blank jack mounted on a carrier that adapted .to be moved laterally in one direction to (move the heel blank on the jack into operative relationship with one of the cutters so as to permit onehalf of the blank to be trimmed off by oscillating the jack, and thereafter moved laterallyin the opposite direction to bringthe blank into operative relationship withtheother, cutter'whil'e the ack is being oscillated to cause the cutter' to trim ofi the remaining: half of the blank During' -the trimming operation the heel-blank jack, in add tion to being oscillated1horizontally relat vely to the carrier, is moved bodily relatively to the "carrier in a vertical direct on, and it is also rocked vertically relatively to the carrier, the bodily vertical movement and vertical rocking movement I ofthe jack being effectedby two curved tracks that are commonly referred to as'the top and bottom tracks of the machine. In

they virtually form a, :toggle which is.

broken or arranged with its twomain elements disposed atan angle toeach other during the trimming operation and which is straight; or arranged with its two main i elements disposed in longitudinal alignment; with each other-when said ack is in its loadlng and unloading position. If the operators body presses forwardly against the handle of the jack with considerable force, duringt-he operation of applying or removing the blank, the'toggle formed by the jack and the carrier will break and cause the carrier to swing horizontally towards one of the cutters, thereby, endangering the-hand I of the operator, which at this time is grasping the heelblank. -My invention eliminates the possibility of the operators 'fingers coming in contact with one of the cutters of the machine during the operation of loading or unloading the jack, in the event the operator unconsciously; presses 'carrier arranged in operative relationship with one of the cutters.

Referring to *the. drawings which illiis tratethe'preferred form of my invention,

A designates two vertically-disposed cutter shafts; arranged in. parallel relation. and

spaced apart, B designates cutters on said shafts, "C3 designates the a frame of the machine D designates a carrier that swings on a vertical shaft D and which isad apted to be swung to the right to bring the heel blank-w, into proximity to one of the cutters andtherea fter swung to the left to bring said blank into proximity to the other outter, E designates a verticallymovable memher on the carrier and F designates as an entirety a jack that carries the heel blank and which is pivotally connected atl to the vertically-movablemember E. The machine is provided with a bottom track G for moving the memher E upwardly during the trimming operation and an adjustable top track H for swinging the jack F relatively to the member E so as to tilt the heel blank during'the trimming operatiomthe member E being provided at itslower end with a laterally-projecting arm 2 that co-operates with the bottom track G to move the heel blank upwardly relatively toflthe cutter during the trimming operation. The top track H is mounted in such a maimer'that it canbe set in ahorizontalposition, in an upwardlyinclinedlposition "and in a downwardly-inclined position so as to vary the contour of the side faces and back of the heel produced in the-machinef In" the machine herein shown the top tra ck H is provided with laterally-projecting trunnions 3 that project into vertically-adjustable hearings 4, and vertically-adjustable stops 5 and 6 are arranged at oppositesides of the axis of "movement of thetop track soas to hold said track-in" adjusted position. The elements of the machineabove described areold' and form no part of my present invention.

Byreferringto" Figures 1 and 3 of the i drawings'it will be noted that the jackjF ingandnnloading position, and eliminate the possihility'ofthe carrier swinging accidentally to the right or to the left towards one of-the cutters, in the event the operator presses forwardly on the handle ofthe jack,

I'have equipped'the machine with a holding meansfortheljack whichis so constructed that after the jack has been engaged with same an accidental forward thrust on the jack will not cause the togglefito break, and

thus bring the heel blank into close proximity to one or theother of the cutters." Said holding means can' be constructed in various ways without departing from the spirit of my inventiombut I prefer to construct said means in such amannerthat-theportions of same that engage the jack are of sufiicient area toefiectively hold the jack in its loading and unloading position, even after said means has been subjected to considerable wear, but said means will not require the operator to make a separate movement, as, for example, release alockingdevice, preparatory to moving the jack towards-oneof the cutters. also prefer to construct said meansin such a manner that it can be easily adjusted so as to compensatefor variations in the position ofjthe top track H of the machine. Inthe preferred form'of my invention as herein illustratedthe holding means above referred to is formed by a plate I arranged on the upper sideof the track H atthe center of same,xas shown inFigures 1 and-2, and provided on its top side with a groove or'channel 7 that'is adapted to receive the portion 8 of the jack-which travels over the upper edge of the top track H, said groove'or channel being disposed radially with respect to theaxis of movemerit of the carrier Dand the jack engaging surfaces of same beingofs'u'ificient areato insure the jack being held securely in its loading and unloading positionsyeven after the portion 8 of the jack and the side walls of the groove 7 in the plate I have'become worn. The plate I is adjustably mounted on the top track H in such a way that it can beset so as to cause theport-ion 8 of thejack to bear evenlyorsquarely on same'inanyposition of'the top track-H, thereby-insuring the side walls; of-the groove or channel 7 bearing throughout their entire lengthon the portion8 of the jack whenthe top track H is arranged horizontally or in annpwardly-inclined or downwardly-inclined po: sition. the jackholding device I with the track'H One convenient way ofcomhining a i is to arrange said-device in a notch in the upper edge of'said track, as shown in Figure 2, and connect said device by means of bolts or other suitable fastening devices!) withia clamping plate 10 that bears against the bottom edge of the track H. VVhen the top track 'His arranged in its upwardly inclined position, as shown in Figure 1,the plate I isset substantiallyhorizontally, and

when the top itrack H is adjusted into itshorizontal position, the plate I is set at an angle to the top track H so as to compensate for the slight change in the position of the it jack and insurethe portion 8 of same bearmg evenly onthe plate I; Likewise, when the top track H is adjustedinto its downwardly-inclined position the plate I is moved intosucha position with relation to said top track thatit willconform to the angle of the portion 8 of the jaclc Normally,'the plate I is clampedt-ightly againstthe'top track H so that it forms a rigid supportfor the portion 8 of the jack when said jack is arranged in "its loading and unloading position,,-butf when it becomes necessary wto change the position of the top track H of the machine, the position of the. plate I can be changed easily simply by loosening the nuts on the bolts 9, then setting the plate I at the desired angle and thereafter tightening said nuts so as to cause the plates I and to be clamped tightly against the top and bottom edgesof the track H.

From the foregoing it will be seen that my invention aflords considerable protec tion to the operators employed on wood'heel turning machines, in thatit eliminates the possibility of an operators hand or fingers being injured by the cutter of the machine, due to the operator pushing forwardly on the jack at a time when his fingers are grasping the heel blank carried by the jack; it does not interfere with the intentional movements of the jack towards and away from the cutters, but it does effectively hold the jack against accidental movement when the jack is arranged in its loading'and unloading position; it adds little to the cost ot a wood heel turning machine, and when constructed in the manner herein illustrated, the means that is used to hold the jack in its loading and unloading position can be adjusted quickly and easily to compensate for a variation in the position of the top track of the machine.

Having thus described my'i'nvention, what 7 I'claim as new and desire to secure by Letters Patent 1s: v

1. A heel turning machine, comprising a pair of rotatable cutters, a swinging carrier adapted to be moved towards and away from.

said cutters, a pivotally-mounted heel blank jack pivotally connected to said carrier, a track on-which a portion of said jack travels, and a holding device for said jack when it is in its loading and unloading position provided with a'groove or channel that is adapted to receive the portion of the jack which travels on said track.

" 2. A heel turning machine, comprising a rotatable cutter, a heel blank jack that is prising a rotatable cutter, a heel blank sup porting means constructed in the form of a toggle that is adapted to be broken to movethe heel blank into operative relationship f with the cutter, and a holding mechanism for said heel blank supporting means consisting i of a plate arranged in the path of travel of said means and provided with a relatively longfchannel that is adapted to receive a portion on the heel blank supporting means ing position, said channel and the portion of said meanswith which it co-operates being when said means is in its loadingand unloadconstructed so that: said portion will move out of said channel when the operator intent onally exerts pressure on the toggle in a direction to move the heel blank towards the cutter.

' 4:- A heel blank turning machine, com- 1 prisinga rotatable cutter, a heelblank sup-' porting means that is adapted to be actuated to move the heel blank thereon into and out of operative relationship with'the cutter, a

track over which a portion of sai'dmeans' travels, and a device adjustably mounted on said track and provided with a groove for receiving said portion when the heel blank supportingimeans is in its loading and unloading position, said portion being adapted pair of rotatable cutters, a swinging carrier,

a heel blank jack pivotally connected with said carrier, a track over which said jack travels, and an adjustable plate arranged at the center ofsaid track and provided with'a groove that is adapted to receive'a portion on said jackwhen the jack is in its loading and unloading position, said portion being adapted to be disengaged from said groove by pressure exerted intentionally on the jack in a direction to move the heel blank towards the cutter. V j

6. In a heel turning machine of the type that comprises 'a heel blank ad: that is adapted to be movedtowards and away from the cutter, a, track over which said jack travels, a plate arranged at the center of said track on the top edge of same and provided with a channel that is adapted to receivea portion on thejack when the jack is. in its loading and unloading position, and an adjustable means for holding said plate in operative relationship with said track, the

.said portion on saidjack bein adapted to be disengaged from said channe by pressure exerted intentionally on the jack in a direction to move the jack towards the cutter.

DAVID o. MARSHALL. 

